Boating
Take a 1-hour, partially narrated historic tour of gorgeous Lake Otsego aboard the double-decker Glimmerglass Queen, 10 Fair St. (tel. 607/547-9511). Or do it yourself without the chattering by renting a canoe or kayak from Sam Smith's Boat Yard, 6098 State Hwy. 80 (tel. 607/547-2543), for $10 to $25 an hour.
Golf
The Otesaga, 60 Lake St. (tel. 800/348-6222 or 607/547-9931; www.otesaga.com), has a renowned course that consistently rates among the nation's top resort courses. Even if you're not a duffer, it's worth checking out the intimidating 18th tee, which sits on an island; you have to hit back over the water toward the hotel. Greens fees are $80 for guests, $90 nonguests; save $25 by teeing off after 3pm.